To clarify, the current 64-bit beta does not include hardware
acceleration even though the revision number is higher (10.3)
There are two "branches" of flash player now:
1. Adobe Flash Player "Square" (64-Bit, no HW acceleration)
2. Adobe Flash Player "Stage Video" (32-Bit, HW acceleration for VDPAU
and CrystalHD)
It appears that someone has a tutorial for all of the 64-Bit MythBuntu users:
http://ubuntuforums.org/showthread.php?t=1636333
Furthermore, there are only a few videos (1%) on YouTube that utilize
"Stage Video":
[QUOTE]
For content providers, Stage Video will work with all of the existing
video viewed in Flash Player once they utilize the new API in their
video player SWFs. Developers can learn more about how to enable
their sites to take advantage of Stage Video today, and sites like
YouTube have already started adding early support for Stage Video.
[END QUOTE]
-Brian